GB1288867A - - Google Patents

Info

Publication number
GB1288867A
GB1288867A GB1288867DA GB1288867A GB 1288867 A GB1288867 A GB 1288867A GB 1288867D A GB1288867D A GB 1288867DA GB 1288867 A GB1288867 A GB 1288867A
Authority
GB
United Kingdom
Prior art keywords
thyristors
time delay
circuit
feb
operate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1288867A publication Critical patent/GB1288867A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
    • H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
    • H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/75—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/757—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/7575—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only for high voltage direct transmission link
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Inverter Devices (AREA)
  • Ac-Ac Conversion (AREA)
  • Thyristors (AREA)
  • Protection Of Static Devices (AREA)

Abstract

1288867 Protecting converters ALLMANNA SVENSKA ELEKTRISKA AB 13 Feb 1970 [14 Feb 1969] 6954/70 Heading H2F In a converting system comprising a series chain of thyristors 101 ... 104, protection against self-triggering following a-commutationperiod comprises a first polarity sensing circuit 116, 118 for determining when the anode voltage is negative, a further circuit 117, 119 for determining when the anode voltage is positive, a time delay 120, 121 interposed between one of said circuits and a AND gate 105, arranged to trigger all thyristors 101 ... 104 if the margin angle is less than the time delay t. The invention minimizes the voltage across certain thyristors that remain non-conductive if other thyristors become self-triggered. The time delay t may be adjusted in dependence on the load on the circuit by monitoring the current in a transductor 19 followed by an amplifier 20 and integrator 21. A circuit breaker 23 may operate on the A.C. side when the load is excessive. The circuit breaker 23 may also operate a by-pass switch 18 on the D.C. side of a 3-phase bridge. The conventional triggering pulses may be fed to terminal 11 either directly or via an optical link.
GB1288867D 1969-02-14 1970-02-13 Expired GB1288867A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE02025/69A SE338099B (en) 1969-02-14 1969-02-14

Publications (1)

Publication Number Publication Date
GB1288867A true GB1288867A (en) 1972-09-13

Family

ID=20259256

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1288867D Expired GB1288867A (en) 1969-02-14 1970-02-13

Country Status (5)

Country Link
US (1) US3865438A (en)
CH (1) CH524271A (en)
DE (1) DE2005724B2 (en)
GB (1) GB1288867A (en)
SE (1) SE338099B (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE364412B (en) * 1972-06-21 1974-02-18 Asea Ab
SE364826B (en) * 1972-07-10 1974-03-04 Asea Ab
SU546304A3 (en) * 1973-10-05 1977-02-05 Сименс Аг (Фирма) Device for protection of converter valves
US4027169A (en) * 1974-03-29 1977-05-31 Union Carbide Corporation High frequency power supply
JPS51116663A (en) * 1975-04-07 1976-10-14 Hitachi Ltd Gate control unit for thyrister valve
US4015170A (en) * 1975-06-30 1977-03-29 Khristofor Fedorovich Barakaev Method for overvoltage protection of HVDC transmission line systems
CA1068782A (en) * 1976-08-23 1979-12-25 Siemens Aktiengesellschaft Protective circuit for thyristors
JPS5820552B2 (en) * 1977-01-26 1983-04-23 株式会社東芝 thyristor conversion device
SE406846B (en) * 1977-05-17 1979-02-26 Asea Ab THYRISTOR COUPLING WITH OVERVOLTAGE PROTECTION
US4309749A (en) * 1979-05-13 1982-01-05 Siemens Aktiengesellschaft Circuit having improved firing angle symmetry for ignition pulses in the control of a multipulse rectifier
SE446418B (en) * 1980-07-07 1986-09-08 Asea Ab RECOVERY PROTECTION FOR A TURISTOR VALVE WITH A MULTIPLE SERIES-PLUGED THRISTORS
DE3035689C2 (en) * 1980-09-22 1986-02-06 Siemens AG, 1000 Berlin und 8000 München Arrangement for triggering two thyristor pairs connected in series, each consisting of two thyristors connected in anti-parallel
EP0066950B1 (en) * 1981-05-21 1985-12-11 F.L. Smidth & Co. A/S Method of protecting a thyristor switch of a pulse generator
SU1105976A1 (en) * 1981-05-25 1984-07-30 Всесоюзный Электротехнический Институт Им.В.И.Ленина Device for protecting converter thyristors against sticking
US4400755A (en) * 1981-07-16 1983-08-23 General Electric Company Overvoltage protection circuit
CH662220A5 (en) * 1982-05-05 1987-09-15 V Elektrotech I V I Lenina METHOD AND ARRANGEMENT FOR IMPULSE CONTROL OF A HIGH VOLTAGE THYRISTOR VALVE.
JPS58195468A (en) * 1982-05-07 1983-11-14 Mitsubishi Electric Corp Device with series thyristors
JPS5911772A (en) * 1982-07-12 1984-01-21 Kansai Electric Power Co Inc:The Overvoltage protecting device of optically firing thyristor
US4494182A (en) * 1983-01-14 1985-01-15 General Electric Company Commutation detection apparatus and method
GB2149594A (en) * 1983-11-09 1985-06-12 Smidth & Co As F L Fast-acting spark-over detector
DK165105C (en) * 1985-08-19 1993-02-22 Smidth & Co As F L PROCEDURE AND CIRCUIT FOR THE PROTECTION OF THYRISTORS IN AN IMPULSE GENERATOR
DE102010010380A1 (en) * 2010-03-05 2011-09-08 Converteam Gmbh Method for operating an electrical circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1171953A (en) * 1967-02-03 1969-11-26 English Electric Co Ltd Improvements in Static Invertor Control Circuits
US3541423A (en) * 1969-01-10 1970-11-17 Gen Electric Margin angle detector

Also Published As

Publication number Publication date
DE2005724B2 (en) 1972-06-22
DE2005724A1 (en) 1970-11-19
US3865438A (en) 1975-02-11
SE338099B (en) 1971-08-30
CH524271A (en) 1972-06-15

Similar Documents

Publication Publication Date Title
GB1288867A (en)
ES433248A1 (en) Short-circuit protection circuit
GB1031465A (en) Alternating current overload protection circuits
GB1137437A (en) Arc suppressing circuits
GB1535984A (en) Control arrangement for an inverter
ES325953A1 (en) A device for the protection of a semiconductor device against overvoltages and/or overload. (Machine-translation by Google Translate, not legally binding)
GB1427405A (en) Electric converter station with parallel static converters
GB981752A (en) Improvements in or relating to electrical protective relays
GB1192595A (en) Improved Static Electrical Converters
GB1031452A (en) Overload protection clrcuit
JPS5537640A (en) Overvoltage preventive circuit of multi-power supply
ES380904A1 (en) System for braking electric motor vehicles
GB1259376A (en)
SE332854B (en)
SU493848A1 (en) High speed short circuit sensor
GB950183A (en) Improvements in and relating to electrical circuits employing transistor networks
SU383149A1 (en) HIGH-SPEED RELAY BODY FOR PROTECTION OF ELECTRICAL TRANSMISSION LINES
GB1129178A (en) Improvements relating to overload protection in electric supply systems
JPS5722386A (en) Inverter circuit
SU1000475A1 (en) Device for automatically controlling operation of electrolyzer
SU792419A1 (en) Device for short-circuiting current protection of traction dc mains
SU655014A1 (en) Overload protection device
GB1311950A (en) Electrical overcurrent protection means
SU389593A1 (en) DEVICE FOR PROTECTION OF LOADING FROM OVERRANCHES
SU546056A1 (en) Device for high-speed current protection of AC mains from short circuit

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee